In the clinical examination of whether the kidney function is normal, the following tests are usually performed, such as checking ion kidney function, blood pressure, urine routine, etc. In general, most patients with abnormal kidney function will have high blood pressure and abnormal urine test, what is abnormal urine test, such as urine protein, urine red blood cells or urine white blood cells, tubular type, etc. in urine routine. If urine red blood cells are significantly higher than normal, glomerular disease can be further ruled out by the urinary aberrant red blood cell rate. If there is an increase in urinary leukocytes or a tubular pattern in the urine, renal tubular diseases such as acute interstitial nephritis, acute pyelonephritis, chronic pyelonephritis, vasculitis-associated kidney damage, etc. can be excluded.